BI-1408
Effect of temperature and pH on enzymes
Biology · Secondary 4 · Hard · Effect of temperature and pH on enzymes
A student investigates how temperature affects the activity of an enzyme that breaks down starch. She measures the time taken for iodine solution to stop turning blue-black.
At 25 °C, the reaction finishes in 80 s. At 35 °C, it finishes in 40 s.
How does the rate at 35 °C compare to the rate at 25 °C?
At 25 °C, the reaction finishes in 80 s. At 35 °C, it finishes in 40 s.
How does the rate at 35 °C compare to the rate at 25 °C?
- The rate at 35 °C is twice the rate at 25 °C.
- The rate at 35 °C is half the rate at 25 °C.
- The rate at 35 °C is the same as at 25 °C.
- The rate at 35 °C is four times the rate at 25 °C.
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